Finding the Fourth Proportional to 887.21, 1,331.50 and 613.70
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Solution
The fourth proportional to 887.21, 1,331.50 and 613.70 is: 921.02
Step by Step Solution
- Step 1: Write the proportion equation
887.21 : 1,331.50 = 613.70 : x - Step 2: Convert to fraction form
887.21/1,331.50 = 613.70/x - Step 3: Cross multiply
887.21x = 1,331.50 × 613.70 - Step 4: Simplify right side
887.21x = 817,141.55 - Step 5: Solve for x
x = 817,141.55/887.21 - Step 6: Final answer
x = 921.02
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.